has to disable ublock to see it. if you link the link and see what they do with them basically they use cookies for analytics, tracking/surveying site usage, user auth, dupral, moodle, and 3rd parties websites like youtube, google, facebook, etc.

why do you think a banner should not be in this case ? devs are lazy they aren't going to recreate all the service inhouse from scratch. I don't think the dev team has infinite budget either.